Graphene oxide (GO)/poly(vinyl alcohol) (PVA) hydrogel (PGOH), which possesses good tensile and reusable absorption properties, has been prepared by the freezing–thawing method. The presence of GO visibly decreases the swelling ratio of PGOH and significantly enhances the tensile properties of PGOH due to the formation of hydrogen bonds between the GO and PVA. The maximum tensile strength and the equilibrium adsorption capacity of methylene blue (MB) of PGOH with 0.5 wt-% GO (PGOH-0.5) is found to be 15, being 4.1 times higher than that of pure PVA hydrogel. The spontaneous adsorption obeys the intraparticle diffusion kinetic model. In addition, PGOH-0.5 exhibits a promising cycling absorption performance. The 1st and 5th cycle of dye removal for PGOH-0.5 reached to 92 and 70%, respectively. Such enhancement in adsorption can be attributed to π–π stacking and strong electrostatic attraction between GO and MB.
ZhaoR, WangY, LiX, Water-insoluble sericin/beta-cyclodextrin/PVA composite electrospun nanofibers as effective adsorbents towards methylene blue. Colloids Surf B. 2015;136:375–382. doi: 10.1016/j.colsurfb.2015.09.038
2.
WuX, WuD, FuR, Preparation of carbon aerogels with different pore structures and their fixed bed adsorption properties for dye removal. Dyes Pigments. 2012;95:689–694. doi: 10.1016/j.dyepig.2012.07.001
3.
ChenZ, ZhangJ, FuJ, Adsorption of methylene blue onto poly(cyclotriphosphazene-co-4,4’-sulfonyldiphenol) nanotubes: kinetics, isotherm and thermodynamics analysis. J Hazard Mater. 2014;273:263–271. doi: 10.1016/j.jhazmat.2014.03.053
4.
AluigiA, RombaldoniF, TonettiC, Study of Methylene Blue adsorption on keratin nanofibrous membranes. J Hazard Mater. 2014;268:156–165. doi: 10.1016/j.jhazmat.2014.01.012
5.
WangX, YangW, JiY, Heterogeneous Fenton-like degradation of methyl blue using MCM-41-Fe/Al supported Mn oxides. RSC Adv. 2016;6:26155–26162. doi: 10.1039/C6RA04709B
6.
ZhaoJ, LuqueR, QiW, Facile surfactant-free synthesis and characterization of Fe3O4 @3-aminophenol–formaldehyde core–shell magnetic microspheres. J Mater Chem A. 2015;3:519–524. doi: 10.1039/C4TA03821E
7.
GhoshT, UllahK, NikamV, The characteristic study and sonocatalytic performance of CdSe-graphene as catalyst in the degradation of azo dyes in aqueous solution under dark conditions. Ultrason Sonochem. 2013;20:768–776. doi: 10.1016/j.ultsonch.2012.09.005
8.
LiuR, CongL, FuH, Removal of Methyl Blue by magnetic CuFe2O4 nanoparticles prepared via the novel solution combustion process. Adv Sci Eng Med. 2016;8:188–195. doi: 10.1166/asem.2016.1847
9.
ZhangX, LiuD, YangL, Self-assembled three-dimensional graphene-based materials for dye adsorption and catalysis. J Mater Chem A. 2015;3:10031–10037. doi: 10.1039/C5TA00355E
10.
ZhangF, SongW, LanJ.Effective removal of methyl blue by fine-structured strontium and barium phosphate nanorods. Appl Surf Sci. 2015;326:195–203. doi: 10.1016/j.apsusc.2014.11.143
11.
ShiK, ZhitomirskyI.Influence of chemical structure of dyes on capacitive dye removal from solutions. Electrochim Acta. 2015;174:588–595. doi: 10.1016/j.electacta.2015.06.029
12.
YangS-T, ChenS, ChangY, Removal of methylene blue from aqueous solution by graphene oxide. J Colloid Interface Sci. 2011;359:24–29. doi: 10.1016/j.jcis.2011.02.064
13.
CuiW, JiJ, CaiY-F, Robust, anti-fatigue, and self-healing graphene oxide/hydrophobically associated composite hydrogels and their use as recyclable adsorbents for dye wastewater treatment. J Mater Chem A. 2015;3:17445–17458. doi: 10.1039/C5TA04470G
14.
LiC, SheM, SheX, Functionalization of polyvinyl alcohol hydrogels with graphene oxide for potential dye removal. J Appl Polym Sci. 2014;131:1082–1090.
15.
YanJ, HuangY, MiaoY-E, Polydopamine-coated electrospun poly(vinyl alcohol)/poly(acrylic acid) membranes as efficient dye adsorbent with good recyclability. J Hazard Mater. 2015;283:730–739. doi: 10.1016/j.jhazmat.2014.10.040
16.
FuDH, ZhanYH, YanN, A comparative investigation on strain induced crystallization for graphene and carbon nanotubes filled natural rubber composites. eXpress Polym Lett. 2015;9:597–607. doi: 10.3144/expresspolymlett.2015.56
17.
ZhanY, LavorgnaM, BuonocoreG, Enhancing electrical conductivity of rubber composites by constructing interconnected network of self-assembled graphene with latex mixing. J Mater Chem. 2012;22:10464–10468. doi: 10.1039/c2jm31293j
18.
ZhanY, WuJ, XiaH, Dispersion and exfoliation of graphene in rubber by an ultrasonically-assisted latex mixing and in situ reduction process. Macromol Mater Eng. 2011;296:590–602. doi: 10.1002/mame.201000358
19.
KokabiM, SirousazarM, HassanZM.PVA–clay nanocomposite hydrogels for wound dressing. Eur Polym J. 2007;43:773–781. doi: 10.1016/j.eurpolymj.2006.11.030
20.
FangF, KongL, HuangJ, Removal of cobalt ions from aqueous solution by an amination graphene oxide nanocomposite. J Hazard Mater. 2014;270:1–10. doi: 10.1016/j.jhazmat.2014.01.031
21.
ZhangL, WangZ, XuC, High strength graphene oxide/polyvinyl alcohol composite hydrogels. J Mater Chem. 2011;21:10399–10406. doi: 10.1039/c0jm04043f
22.
LeeC, WeiXD, KysarJW, Measurement of the elastic properties and intrinsic strength of monolayer graphene. Science. 2008;321:385–388. doi: 10.1126/science.1157996
23.
ParkSJ, LeeKS, BozokluG, Graphene oxide papers modified by divalent ions-enhancing mechanical properties via chemical cross-linking. ACS Nano. 2008;2:572–578. doi: 10.1021/nn700349a
24.
WuZ, ZhongH, YuanX, Adsorptive removal of methylene blue by rhamnolipid-functionalized graphene oxide from wastewater. Water Res. 2014;67:330–344. doi: 10.1016/j.watres.2014.09.026
25.
LiY, DuQ, LiuT, Methylene blue adsorption on graphene oxide/calcium alginate composites. Carbohyd Polym. 2013;95:501–507. doi: 10.1016/j.carbpol.2013.01.094
26.
ShenY, FangQ, ChenB. Environmental applications of three-dimensional graphene-based macrostructures: adsorption, transformation, and detection. Environ Sci Technol. 2015;49:67–84. doi: 10.1021/es504421y
27.
NandiB, GoswamiA, PurkaitM. Removal of cationic dyes from aqueous solutions by kaolin: kinetic and equilibrium studies. Appl Clay Sci. 2009;42:583–590. doi: 10.1016/j.clay.2008.03.015
28.
HoY, McKayG. Pseudo-second order model for sorption processes. Process Biochem. 1999;34:451–465. doi: 10.1016/S0032-9592(98)00112-5
29.
KoçerO, AcemioğluB. Adsorption of basic green 4 from aqueous solution by olive pomace and commercial activated carbon: process design, isotherm, kinetic and thermodynamic studies. Desalin Water Treat.2015;57:16653–16669. doi: 10.1080/19443994.2015.1080194
30.
TangH, ZhouW, ZhangL. Adsorption isotherms and kinetics studies of malachite green on chitin hydrogels. J Hazard Mater. 2012;209–210:218–225. doi: 10.1016/j.jhazmat.2012.01.010
31.
SahuA, ChoiWI, LeeJH, Graphene oxide mediated delivery of methylene blue for combined photodynamic and photothermal therapy. Biomaterials. 2013;34:6239–6248. doi: 10.1016/j.biomaterials.2013.04.066
